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package zipkin_test
import (
"fmt"
"net"
"reflect"
"strings"
"testing"
"github.com/openzipkin/zipkin-go"
"github.com/openzipkin/zipkin-go/model"
)
const (
serviceName = "my_service"
onlyHost = "localhost"
defaultPort = 0
port = 8081
invalidNegativePort = "localhost:-8081"
invalidOutOfRangePort = "localhost:65536"
invalidHostPort = "::1:8081"
unreachableHostPort = "nosuchhost:8081"
)
var (
ipv4HostPort = "127.0.0.1:" + fmt.Sprintf("%d", port)
ipv6HostPort = "[2001:db8::68]:" + fmt.Sprintf("%d", port)
ipv4ForHostPort = net.IPv4(127, 0, 0, 1)
ipv6ForHostPort = net.ParseIP("2001:db8::68")
)
func TestEmptyEndpoint(t *testing.T) {
ep, err := zipkin.NewEndpoint("", "")
if err != nil {
t.Errorf("unexpected error: %s", err.Error())
}
if ep != nil {
t.Errorf("endpoint want nil, have: %+v", ep)
}
}
func TestServiceNameOnlyEndpoint(t *testing.T) {
have, err := zipkin.NewEndpoint(serviceName, "")
if err != nil {
t.Errorf("unexpected error: %s", err.Error())
}
want := &model.Endpoint{ServiceName: serviceName}
if !reflect.DeepEqual(want, have) {
t.Errorf("endpoint want %+v, have: %+v", want, have)
}
}
func TestInvalidHostPort(t *testing.T) {
_, err := zipkin.NewEndpoint(serviceName, invalidHostPort)
if err == nil {
t.Fatal("expected error")
}
if !strings.Contains(err.Error(), "too many colons in address") {
t.Fatalf("expected too many colons in address error, got: %s", err.Error())
}
}
func TestNewEndpointFailsDueToOutOfRangePort(t *testing.T) {
_, err := zipkin.NewEndpoint(serviceName, invalidOutOfRangePort)
if err == nil {
t.Fatal("expected error")
}
if !strings.Contains(err.Error(), "value out of range") {
t.Fatalf("expected out of range error, got: %s", err.Error())
}
}
func TestNewEndpointFailsDueToNegativePort(t *testing.T) {
_, err := zipkin.NewEndpoint(serviceName, invalidNegativePort)
if err == nil {
t.Fatal("expected error")
}
if !strings.Contains(err.Error(), "invalid syntax") {
t.Fatalf("expected invalid syntax error, got: %s", err.Error())
}
}
func TestNewEndpointFailsDueToLookupIP(t *testing.T) {
_, err := zipkin.NewEndpoint(serviceName, unreachableHostPort)
if err == nil {
t.Fatal("expected error")
}
if !strings.Contains(err.Error(), "no such host") {
t.Fatalf("expected no such host error, got: %s", err.Error())
}
}
func TestNewEndpointDefaultsPortToZeroWhenMissing(t *testing.T) {
endpoint, err := zipkin.NewEndpoint(serviceName, onlyHost)
if err != nil {
t.Fatalf("unexpected error: %s", err.Error())
}
if endpoint.Port != defaultPort {
t.Fatalf("expected port %d, got %d", defaultPort, endpoint.Port)
}
}
func TestNewEndpointIpv4Success(t *testing.T) {
endpoint, err := zipkin.NewEndpoint(serviceName, ipv4HostPort)
if err != nil {
t.Fatalf("unexpected error: %s", err.Error())
}
if serviceName != endpoint.ServiceName {
t.Fatalf("expected service name %s, got %s", serviceName, endpoint.ServiceName)
}
if !ipv4ForHostPort.Equal(endpoint.IPv4) {
t.Fatalf("expected IPv4 %s, got %s", ipv4ForHostPort.String(), endpoint.IPv4.String())
}
if port != endpoint.Port {
t.Fatalf("expected port %d, got %d", port, endpoint.Port)
}
if endpoint.IPv6 != nil {
t.Fatalf("expected empty IPv6 got %+v", endpoint.IPv6)
}
}
func TestNewEndpointIpv6Success(t *testing.T) {
endpoint, err := zipkin.NewEndpoint(serviceName, ipv6HostPort)
if err != nil {
t.Fatalf("unexpected error: %s", err.Error())
}
if serviceName != endpoint.ServiceName {
t.Fatalf("expected service name %s, got %s", serviceName, endpoint.ServiceName)
}
if !ipv6ForHostPort.Equal(endpoint.IPv6) {
t.Fatalf("expected IPv6 %s, got %s", ipv6ForHostPort.String(), endpoint.IPv6.String())
}
if port != endpoint.Port {
t.Fatalf("expected port %d, got %d", port, endpoint.Port)
}
if endpoint.IPv4 != nil {
t.Fatalf("expected empty IPv4 got %+v", endpoint.IPv4)
}
}
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